All of the following were associated with the Central Pacific Railroad except:
OA) Scotch-Irish immigrant labor
OB) nitroglycerine explosives
OC) engineering of bridges and tunnels
OD) the "Big Four"

How did americans disagree over the role of federal and state goverment before and durning the civil war

Two of these describe "federalism." (choose two answers) select one or more: a. the national government absolutely controls all state governments. b. power is shared by the national and state governments. c. state governments exercise absolute power over the national government. d. it is a compromise meant to eliminate the disadvantages of a "unitary" and a "confederate" system.

Does anyone know why the second great awakening occurred? (i need an answer asap because this is a question on my assignment! < 3 : ))